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Effect of nitrogen pressure on mechanical properties of nc-TiAlN/a-Si3N4 nanocomposite coatings deposited by cathodic arc PVD process
International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Balapur PO, Hyderabad-500005, India.
Jawaharlal Nehru Technological Unversity College of Engineering, Kukatpally, Hyderabad-500085, India.
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. Jawaharlal Nehru Technological Unversity College of Engineering, Kukatpally, Hyderabad-500085, India. (PTW)ORCID iD: 0000-0001-5521-6894
2016 (English)In: Materials Today: Proceedings, E-ISSN 2214-7853, Vol. 3, no 9, 3002-3011 p.Article in journal (Refereed) Published
Abstract [en]

The present work investigates effect of nitrogen pressure on composition and mechanical properties of superhard nc-TiAlN/a-Si3N4 nanocomposite coatings deposited by cathodic arc PVD process. As the nitrogen pressure increases, at.% ratio of (Al+Si)/Ti, initially, increases to a maximum and thereafter, it decreases while the nitrogen content follows the reverse trend. Hardness is influenced by chemical composition and crystallite size of TiAlN phase. Maximum average hardness of 37 GPa is achieved when at.% ratio of Al(+Si)/Ti or N/(Ti+Al+Si) approaches 1.0 and decrease in scratch adhesion strength is attributed to the defects caused by nitrogen deficiency.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 3, no 9, 3002-3011 p.
Keyword [en]
Nanocomposite, TiAlSiN, nc-TiAlN/a-Si3N4, Nitrogen pressure, Cathodic arc PVD, Cylindrical cathode
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology; ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-10210DOI: 10.1016/j.matpr.2016.09.014ScopusID: 2-s2.0-84994153891OAI: oai:DiVA.org:hv-10210DiVA: diva2:1051631
Conference
Advances in Refractory and Reactive Metals and Alloys (ARRMA 2016)
Available from: 2016-12-02 Created: 2016-12-02 Last updated: 2016-12-20Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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